<!-- index.html -->
<!DOCTYPE html>
<html>
<meta charset="utf-8">

<body>
  <div style="text-align: center;font-size: larger;">
    <button type="button" onclick="compute()">计算应用侧的乘法</button>
  </div>
  <div id="info">

  </div>
</body>
<script type="text/javascript">
  function compute() {
    let multiplier = multipObj.getMultiplier();
    let multiplicand = multipObj.getMultiplicand();
    let product = multiplier * multiplicand
    multipObj.setProduct(product);
  }

  function setbackcolor(color) {
    document.body.style.backgroundColor = color;
  }
</script>

</html>